–WhydidtheyhelpMrsBrownwithherwork?–Becauseshewas

问题详情：

– Why did they help Mrs Brown with her work?

– Because she was _____.

A. an old friend of them         B. the friend of them

C. a the their friend             D. a good friend of theirs

【回答】

D

知识点：物主代词

题型：选择题